The real question is: How good does art have to be to qualify as karaoke?

“Karaoke makes regular people rock stars, and rock stars regular people,” explained Caryn Brooks, the communications director for Portland’s mayor. Sometimes the singers are actual rock stars. Brooks has a vivid memory of the time in the late ’90s when, at the original Chopsticks, she saw Elliott Smith sing Billy Joel’s “It’s Still Rock and Roll to Me.”

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…We looked at Brophy, who shrugged. A tall young man in a puffy jacket swayed up onto the stage, then kicked into the lyrics — but instead of imitating Jack White’s rock ’n’ roll keen, he sang in a rhythm-and-blues croon. The song was instantly transformed from dirty garage rock to bedroom soul. It sounded incredible, as if the song were written that way in the first place. When it was over, Justin bowed, accepting our applause, then replaced the microphone in its stand and walked out the door, never to return.

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“Here’s the important thing to remember about Portland,” she said. “No one’s here to get rich. Unlike everywhere else in America. There’s a critical mass here of people here following their passions. Oh, it’s my turn, hold on.” She polished off her beer, jogged up to the stage and began what was, by a wide measure, the most amazing song I heard in my Portland karaoke odyssey: “Prisencolinensinainciusol,” a 1972 epic written in gibberish by the Italian performer Adriano Celentano, supposedly to mimic how English sounds to the Italian ear. It is like four minutes of “Jabberwocky” with a Continental accent and a mod beat. The karaoke version is a Baby Ketten original, of course. Addie nailed every syllable, then high-fived her fellow Kettens all the way back to our table. “So, yeah,” she said. “People from Portland do stuff like that.”

Portland isn’t just the capital of karaoke, I was realizing. The Japanese influence, the small-business climate and the abundance of bands don’t really matter. Portland is the capital of America’s small ponds. It’s a city devoted to chasing that feeling — the feeling of doing something you love, just for a moment, and being recognized for it, no matter how obscure or unnecessary or ludicrous it might seem to the straight world. It is the capital of taking frivolity seriously, of being silly as if it’s your job.